const cp = require('child_process')
const { resolve } = require('path')

;(async ()=>{
    const script = resolve(__dirname,'../crawler/video.js')
    const child = cp.fork(script,[])
    let invoked = false

    child.on('error',err=>{
        if(invoked) return

        invoked = true
        
        console.log(err)
    })

    child.on('exit',code =>{
        if(invoked) return

        invoked = false
        let err = code === 0 ? null : new Error('exit code'+code)

        console.log(err)
    })

    child.on('message',data=>{
        console.log(data, '')
    })
})()